Method of and means for applying the insulation of high-tension coils



Oct. 2 1923. 1,469,469

s. R. WRIGHT METHOD OF AND MEANS FOR APPLYING THE INSULATION OF HIGH TENSION COILS Filed A1122. 22. 1921 Fig! Patented Oct. 2, 1923.

UNITED STATES PATENT OFFICE.

STANLEY ROBERT WRIGHT, or n-Awnon, NEAR LEEDS, ENGLAND, nssronon ro IGRANIC ELECTRIC COMPANY LIMITED, OF LONDON, ENGLAND, A CORPORATION:

OF GREAT BRITAIN.

METHOD OF AND MEANS FOR APPLYING THE INSULATION HIGH-TENSION COILS.

' Application filed August 22, 1921. Serial No. 494,409.

(GRANTED UNDER THE PROVISIONS OF THE ACT OF MARCH 3; 1921, 41 STAT. L, 1313.)

To all "107mm may concern: I

Be it known that I, STANLEY ROBERT \Vineirr, a subject of the King of Great .lirit-a-in. and resident oi? Rawdon, near 5 Leeds, Yorkshire, England," have invented certain new and useful Improvements in a Method oi and Means for Applying the Insi'ilation'of Iiligh-Tension Coils (for which I have obtained a patent in Great Britain, No. .li-JbS'l, dated May 29, 919), of which the following is a si ieciiication.

This invention relates to high tension coils in which a high insulation is disposed be tween consecutive layers of conducting ma terial at the end of each layer where occurs the maximum difference of potential.

'lheobject of the present invention is to provide iluproven'icnts in the insulations of such coils whereby such disposition of high insulation is obtained simultaneous with they mainteinince of a high space factor. I

The present invention consists in the winding of high tension coils of the above-char- 2t(ft(i','()ii an insulation strip, adapted to be disposed between consecutive layers of con diu ting material, which is of tapering width and of such a shape that when applied 'to the coil the thickness of the insulation increases from one end of the coil to the other which is the end where occurs the maxin'u'lm difl'crcnce of potential.

This is efiected by cutting the strips of insulation, before application, to the required length and then din'iinish'ing the width from a i'uaxiinuni at one end which corresponds substai'itiziilly to the width of the coil, to a minimum at the other in such a manner that oue'long edge is at right angles to the will be a graduated thickness of insulation.

In order that the invention may be clearly understood, its practical application Wlll now be described by aid of the accompanying drawings, in which c Fig. 1 1s a plan of the triangular strip of insulation previous to winding the same on the coil.

Fig. 2 is a longitudinal section of several layers of a coil constructed in accordance with this invention, and Fig. 3 is a side elevation of the same.

Referring now to the drawings, the strips of insulating material (6 are cutas shown in Fig. 1, one corner I) being a right angle whilst the top edge 0 corresponds with the full width of the coil to be Wound.

The length of the side 03 of the stripe is predetermined from the number of convolutions of insulating material it is reouired to put between consecutive layers of wire.

What I claim and desire to secure by Letters Patent is 1. In a winding of high tension coils, an insulating strip adapted to be wound between adjacent layers of the conducting winding, said strip varying in width from one end to the other for the purpose speci fied.

2. In the winding of hi qh tension coils an insulating strip, adapted to be disposed between consecutive layers of conducting material, having one edge of maximum width, which gradually tapers to the desired minimum at the other end, such edge of maximum width being at right angles to one of the side or long edges of the strip for the purposes specified.

In witness whereof I afliX my signature STANLEY ROBERT -WRIGHT.

In Fig. the alternatelayers of insula- 

